目的通过测定哮喘大鼠气道重塑后表皮生长因子蛋白的表达,探讨平喘颗粒对哮喘大鼠气道重塑的作用机理。方法将90只Wistar大鼠分为6组,每组15只,A、B组予以生理盐水灌胃,C组予0.5 mg布地奈德雾化吸入(2次/d),D、E、F组给予中药低4.01 g/(...目的通过测定哮喘大鼠气道重塑后表皮生长因子蛋白的表达,探讨平喘颗粒对哮喘大鼠气道重塑的作用机理。方法将90只Wistar大鼠分为6组,每组15只,A、B组予以生理盐水灌胃,C组予0.5 mg布地奈德雾化吸入(2次/d),D、E、F组给予中药低4.01 g/(kg·d)、中8.01 g/(kg·d)、高16.02 g/(kg·d)剂量灌胃。各组均于末次激发24 h后处死,取大鼠左肺中下段,切成1 mm3左右,并将其用2.5%戊二醛固定,以备电镜用。大鼠右肺切取后,先用PBS漂洗,吸干后置于液氮罐中速冻,之后保存于-80℃冰箱,用于RT-PCR检测。结果平喘颗粒(低、中、高)组、布地奈德组和模型组的EGF m RNA蛋白表达均高于空白组,差异有统计学意义(P<0.05)。平喘颗粒(低、中、高)组和布地奈德组EGF m RNA蛋白的表达较模型组明显受到抑制,差异有统计学意义(P<0.05)。平喘颗粒(中、高)组EGF m RNA蛋白的表达较布地奈德组降低,差异有统计学意义(P<0.05)。平喘颗粒低剂量组EGF m RNA蛋白的表达较布地奈德组降低,但差异无统计学意义。结论平喘颗粒可以改善和控制气道重塑过程中气道高反应和气道阻塞的状态,并且可抑制EGF m RNA的表达,从而保护肺部组织细胞,减轻哮喘发作。展开更多
Objective:To observe the effect of Pingchuan granule on the number of typeⅡinnate lymphocytes(ILC2)and M2 polarization of macrophages in the lung tissue of asthmatic mice;Methods:Ovalbumin sensitized and challenged a...Objective:To observe the effect of Pingchuan granule on the number of typeⅡinnate lymphocytes(ILC2)and M2 polarization of macrophages in the lung tissue of asthmatic mice;Methods:Ovalbumin sensitized and challenged asthmatic mouse models were established,and then Pingchuan granules or IL-33 neutralizing antibody were given to intervene.The pathological morphology of lung tissue was observed by HE,PAS and Masson staining,and the expressions of IL-4,IL-5,IL-13 and IL-33 in BALF and lung tissue were detected by ELISA and qRT-PCR,Flow cytometry was used to detect the number of type II innate lymphocytes and type M2 macrophages in lung tissue.Western blot was used to detect the protein expression levels of ST-2,FIZZ1 and Arg-1 in lung tissue;Results:Compared with the control group,the inflammation score,PAS score and collagen staining area of the model group were significantly increased,the expressions of IL-4,IL-5,IL-13 and IL-33 in BALF and lung tissue were significantly increased,the number of ILC2 and M2 macrophages,the expression of ST-2,FIZZ1 and Arg-1 protein in lung tissue were significantly increased,and the differences were statistically significant(P<0.05);Compared with the model group,Pingchuan granule could significantly reduce the inflammation score,PAS score and collagen staining area of asthmatic mice,down-regulate the expression of IL-4,IL-5,IL-13 and IL-33 in BALF and lung tissue,reduce the number of ILC2 and M2 macrophages,and the expression of ST-2,FIZZ1 and Arg-1 protein in lung tissue(P<0.05);Conclusion:Pingchuan granule improve the airway remodeling of asthma by inhibiting the polarization of M2 macrophages mediated by ILC2.展开更多
文摘目的通过测定哮喘大鼠气道重塑后表皮生长因子蛋白的表达,探讨平喘颗粒对哮喘大鼠气道重塑的作用机理。方法将90只Wistar大鼠分为6组,每组15只,A、B组予以生理盐水灌胃,C组予0.5 mg布地奈德雾化吸入(2次/d),D、E、F组给予中药低4.01 g/(kg·d)、中8.01 g/(kg·d)、高16.02 g/(kg·d)剂量灌胃。各组均于末次激发24 h后处死,取大鼠左肺中下段,切成1 mm3左右,并将其用2.5%戊二醛固定,以备电镜用。大鼠右肺切取后,先用PBS漂洗,吸干后置于液氮罐中速冻,之后保存于-80℃冰箱,用于RT-PCR检测。结果平喘颗粒(低、中、高)组、布地奈德组和模型组的EGF m RNA蛋白表达均高于空白组,差异有统计学意义(P<0.05)。平喘颗粒(低、中、高)组和布地奈德组EGF m RNA蛋白的表达较模型组明显受到抑制,差异有统计学意义(P<0.05)。平喘颗粒(中、高)组EGF m RNA蛋白的表达较布地奈德组降低,差异有统计学意义(P<0.05)。平喘颗粒低剂量组EGF m RNA蛋白的表达较布地奈德组降低,但差异无统计学意义。结论平喘颗粒可以改善和控制气道重塑过程中气道高反应和气道阻塞的状态,并且可抑制EGF m RNA的表达,从而保护肺部组织细胞,减轻哮喘发作。
基金General Program of the National Natural Science Foundation of China(No.82074365)General Program of the Natural Science Foundation of Heilongjiang Province(No.H2017068)Harbin City Applied Technology Research and Development Project(No.2017RAXXJ053)。
文摘Objective:To observe the effect of Pingchuan granule on the number of typeⅡinnate lymphocytes(ILC2)and M2 polarization of macrophages in the lung tissue of asthmatic mice;Methods:Ovalbumin sensitized and challenged asthmatic mouse models were established,and then Pingchuan granules or IL-33 neutralizing antibody were given to intervene.The pathological morphology of lung tissue was observed by HE,PAS and Masson staining,and the expressions of IL-4,IL-5,IL-13 and IL-33 in BALF and lung tissue were detected by ELISA and qRT-PCR,Flow cytometry was used to detect the number of type II innate lymphocytes and type M2 macrophages in lung tissue.Western blot was used to detect the protein expression levels of ST-2,FIZZ1 and Arg-1 in lung tissue;Results:Compared with the control group,the inflammation score,PAS score and collagen staining area of the model group were significantly increased,the expressions of IL-4,IL-5,IL-13 and IL-33 in BALF and lung tissue were significantly increased,the number of ILC2 and M2 macrophages,the expression of ST-2,FIZZ1 and Arg-1 protein in lung tissue were significantly increased,and the differences were statistically significant(P<0.05);Compared with the model group,Pingchuan granule could significantly reduce the inflammation score,PAS score and collagen staining area of asthmatic mice,down-regulate the expression of IL-4,IL-5,IL-13 and IL-33 in BALF and lung tissue,reduce the number of ILC2 and M2 macrophages,and the expression of ST-2,FIZZ1 and Arg-1 protein in lung tissue(P<0.05);Conclusion:Pingchuan granule improve the airway remodeling of asthma by inhibiting the polarization of M2 macrophages mediated by ILC2.
